Do I need to change the card number after the credit card expires?
No need. After the user's credit card expires, the bank will send the new card directly to the user's home. At the same time, the user's credit card number is still the same as before, and the credit card number will not be changed because of card change. If the user's card is degaussed or damaged, the credit card number will not change when changing the card. Under special circumstances, such as the user does not receive a new card from the bank in time, and chooses to send another card, the card number will change. This situation is equivalent to the user directly applying for a new credit card, then the card number will change.